What is the propulsion method for the metallic orb?

[Curiousity2023]

TL;DR

A US military drone caught a fast moving metallic orb in the middle east with no visible rotors or exhaust. Its trajectory was straight so it wasn't shot like a cannon ball. What could be its propulsion method?

Here is a video of the metallic orb captured by a US drone. Wondering about the physics of how such an object could fly.

 

[russ_watters]

The most likely technology is helium for lift and wind for propulsion. "Metallic orb" sounds a lot like "mylar balloon". But we don't do UFO debunking here so this thread is closed.